|Not specifically C&C, but there's a brand new historic map site for Toronto that includes some rather nice charts of the harbour, dating back to the 1790s.
Can't recall if this forum allows urls, but here's the one for the 1792 harbour plan.
In the event that this doesn't survive the forum, google search oldtorontomaps blogspot dot ca and have a browse.
C&C 27 Mk1
Midland Bay Sailing Club